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// Copyright (c) 2020 André Perez Maselco
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "source/fuzz/transformation_toggle_access_chain_instruction.h"
#include "source/fuzz/fuzzer_util.h"
#include "source/fuzz/instruction_descriptor.h"
namespace spvtools {
namespace fuzz {
TransformationToggleAccessChainInstruction::
TransformationToggleAccessChainInstruction(
protobufs::TransformationToggleAccessChainInstruction message)
: message_(std::move(message)) {}
TransformationToggleAccessChainInstruction::
TransformationToggleAccessChainInstruction(
const protobufs::InstructionDescriptor& instruction_descriptor) {
*message_.mutable_instruction_descriptor() = instruction_descriptor;
}
bool TransformationToggleAccessChainInstruction::IsApplicable(
opt::IRContext* ir_context, const TransformationContext& /*unused*/) const {
auto instruction =
FindInstruction(message_.instruction_descriptor(), ir_context);
if (instruction == nullptr) {
return false;
}
spv::Op opcode = static_cast<spv::Op>(
message_.instruction_descriptor().target_instruction_opcode());
assert(instruction->opcode() == opcode &&
"The located instruction must have the same opcode as in the "
"descriptor.");
if (opcode == spv::Op::OpAccessChain ||
opcode == spv::Op::OpInBoundsAccessChain) {
return true;
}
return false;
}
void TransformationToggleAccessChainInstruction::Apply(
opt::IRContext* ir_context, TransformationContext* /*unused*/) const {
auto instruction =
FindInstruction(message_.instruction_descriptor(), ir_context);
spv::Op opcode = instruction->opcode();
if (opcode == spv::Op::OpAccessChain) {
instruction->SetOpcode(spv::Op::OpInBoundsAccessChain);
} else {
assert(opcode == spv::Op::OpInBoundsAccessChain &&
"The located instruction must be an OpInBoundsAccessChain "
"instruction.");
instruction->SetOpcode(spv::Op::OpAccessChain);
}
}
protobufs::Transformation
TransformationToggleAccessChainInstruction::ToMessage() const {
protobufs::Transformation result;
*result.mutable_toggle_access_chain_instruction() = message_;
return result;
}
std::unordered_set<uint32_t>
TransformationToggleAccessChainInstruction::GetFreshIds() const {
return std::unordered_set<uint32_t>();
}
} // namespace fuzz
} // namespace spvtools
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